WO2016176870A1

WO2016176870A1 - Quantum dot membrane and liquid crystal display

Info

Publication number: WO2016176870A1
Application number: PCT/CN2015/078994
Authority: WO
Inventors: 张彦学
Original assignee: 武汉华星光电技术有限公司
Priority date: 2015-05-05
Filing date: 2015-05-14
Publication date: 2016-11-10
Also published as: CN104777670B; US20170219886A1; US10690965B2; CN104777670A

Abstract

Disclosed is a quantum dot membrane (10). The quantum dot membrane (10) comprises a color gamut conversion region (11), and a color gamut deactivation region (12) located on the periphery of the color gamut conversion region (11), wherein a quantum fluorescent powder layer is arranged on the color gamut deactivation region (12). As the quantum fluorescent powder layer is arranged on the color gamut deactivation region (12), the defect that the color gamut deactivation region (12) becomes deactivated due to cutting of the quantum dot membrane (10) is effectively overcome, and the function of color gamut conversion of the quantum dot membrane (10) is further improved. The manufacturing process is simple. After the quantum dot membrane (10) is properly cut, the color gamut deactivation region (12) of the quantum dot membrane is coated with desired quantum fluorescent powder and then the quantum dot membrane (10) is fitted into a module product, so that the design of a high-color-gamut product can be done.

Description

Quantum dot diaphragm and liquid crystal display

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. CN201510223177.2, filed on May 5, 2015, which is incorporated herein by reference.

Technical field

The invention belongs to the technical field of liquid crystal display, and particularly relates to a quantum dot film and a liquid crystal display.

Background technique

With the development of electronic products, consumers are increasingly demanding the color gamut of electronic products, and high color gamut design has become an important direction for electronic product design. In the design of high color gamut products, the current mainstream method is to use a quantum dot diaphragm to achieve high color gamut conversion, and this diaphragm has a higher efficiency color gamut conversion function. However, such a film may cause an area of about 1 mm in the cutting portion to be broken during cutting. For a moving product with a narrow frame, the cutting failure may result in the quantum dot film not being well used in the product.

In view of the above problems in the art, it is desirable in the art to find a defect that can compensate for the failure of the cutting portion of the quantum dot diaphragm during cutting, thereby realizing a higher color gamut conversion function of the quantum dot diaphragm to solve the problem. Defects in the prior art.

Summary of the invention

In order to further improve the color gamut conversion function of the quantum dot film, the present invention provides a quantum dot film.

According to the present invention, a quantum dot film includes a color gamut conversion region and a color gamut failure region located on the outer periphery of the color gamut conversion region. Wherein, a quantum phosphor layer is disposed on the color gamut failure zone.

The invention further improves the color gamut conversion function of the quantum dot film by setting the quantum phosphor layer in the color gamut failure zone to effectively compensate for the defect of the gamut failure zone failure caused by the quantum dot diaphragm during cutting. . The manufacturing process of the invention is simple, and the color gamut failure of the quantum dot film is completed after the quantum dot film is cut. The desired quantum phosphor can be coated, and then the quantum dot film can be assembled into the module product to complete the design of the high color gamut product. It can be understood that the present invention can also completely cover the quantum phosphor film on the quantum dot film, but because the quantum phosphor is relatively expensive, it is not suitable for the coating of the entire film.

In some embodiments, the outer surface of the color gamut conversion zone is flush with the outer surface of the color gamut failure zone after the quantum phosphor layer is disposed. This arrangement can fully ensure the flatness of the outer surface of the entire quantum dot diaphragm, so that the various regions of the quantum dot diaphragm have the same thickness, thereby further improving the color gamut conversion function.

In some embodiments, the quantum phosphor layer includes a plurality of quantum dots capable of converting the received light into light of different colors, the light of which is mixed to form white light. The quantum phosphor layer can realize the color gamut conversion function, and the light emitted by the light source can be converted into light of a plurality of colors after passing through the quantum phosphor layer, and the light of the plurality of colors is mixed to form a white light with a higher color gamut.

In some embodiments, the quantum phosphor layer includes a plurality of transparent regions for transmitting blue light and a plurality of first quantum dot regions and second quantum dot regions that are at least capable of being excited by blue light to generate red and green light, respectively. In this embodiment, the light source may be blue light. When the blue light illuminates the quantum phosphor layer, the blue light is directly emitted from the transparent region, and the blue light respectively excites the first quantum dot region and the second quantum dot region, and is in the first quantum dot. Red light and green light are emitted from the region and the second quantum dot region respectively, and the emitted red light and green light are mixed with the blue light emitted from the transparent region to form a white light with a higher color gamut.

In some embodiments, the transparent region, the first quantum dot region, and the second quantum dot region are alternately disposed within the color gamut failure region. This setting facilitates the arrangement of the various areas in the gamut failure zone while making the light output more uniform. The transparent region, the first quantum dot region, and the second quantum dot region are preferably respectively disposed in a strip shape, and the bandwidth thereof may be proportionally set according to actual needs.

In some embodiments, the clear areas, the first quantum dot area, and the second quantum dot area have equal light-passing areas. With this arrangement, the ratio of the light passing through the transparent region, the first quantum dot region, and the second quantum dot region is made uniform, so that the light is more uniform.

In some embodiments, the outer surface of the quantum dot film is provided with a protective layer. On the one hand, the protective layer can be used to make the surface of the quantum dot film smoother, on the other hand, it can well protect the quantum dot film and fully guarantee its color gamut conversion function.

A liquid crystal display according to the present invention includes the above quantum dot film. In the liquid crystal display using the above quantum dot film, the liquid crystal display also has a higher color gamut display because the quantum dot film has a higher color gamut conversion function.

In some embodiments, the liquid crystal display further includes a backlight module and a liquid crystal panel, and the quantum dot film is provided Placed between the backlight module and the liquid crystal panel.

Compared with the prior art, the present invention has the following advantages:

1) The quantum dot film of the present invention has a complete color gamut conversion function. That is, by setting the quantum phosphor layer in the gamut failure zone and correspondingly designing the quantum phosphor layer, it can effectively compensate for the defect of the gamut failure zone failure caused by the quantum dot diaphragm during cutting.

2) The quantum dot film of the present invention has a simple manufacturing process, and after the quantum dot film is cut, the desired quantum phosphor can be coated in the color gamut failure zone of the quantum dot film.

3) The quantum dot film of the present invention can be applied to various liquid crystal displays, and can realize high color gamut design of various liquid crystal displays.

DRAWINGS

The invention will be described in more detail hereinafter based on the embodiments and with reference to the accompanying drawings. among them:

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of a quantum dot film according to the present invention.

In the drawings, the same components are denoted by the same reference numerals, and the drawings are not drawn to actual scale.

detailed description

The invention will now be further described with reference to the accompanying drawings.

The details described herein are illustrative and are merely illustrative of the embodiments of the invention, and are set forth to provide the most useful and comprehensible description of the principles and concepts of the invention. In this regard, the description of the structural details of the present invention is not intended to be beyond the scope required for a basic understanding of the invention, and those skilled in the art Several forms.

1 shows a schematic structural view of a quantum dot film 10 provided in accordance with the present invention. The quantum dot film 10 includes a color gamut conversion region 11 and a color gamut failure region 12 located on the outer periphery of the color gamut conversion region 11. Wherein, the gamut failure zone 12 is provided with a quantum phosphor layer (not shown).

The present invention further improves the quantum dot diaphragm 10 by providing a quantum phosphor layer in the color gamut failure region 12 to effectively compensate for the defect of the gamut failure region 12 caused by the quantum dot film 10 during cutting. Color gamut conversion. The fabrication process of the present invention is simple. After the quantum dot film 10 is cut, the desired quantum phosphor can be applied to the color gamut failure region 12 of the quantum dot film 10, and then the quantum dot film 10 is assembled to the mold. The design of high color gamut products can be completed in the group products. It can be understood that the present invention can also measure the amount The sub-phosphor layer completely covers the quantum dot film 10, but since the quantum phosphor is expensive, it is not suitable for coating the entire film.

Preferably, the outer surface of the color gamut conversion region 11 is flush with the outer surface of the color gamut failure region 12 after the quantum phosphor layer is disposed. This arrangement can sufficiently ensure the flatness of the outer surface of the entire quantum dot film 10, so that the respective regions of the quantum dot film 10 have the same thickness, thereby further improving the color gamut conversion function.

In accordance with the present invention, a quantum phosphor layer includes a plurality of quantum dots capable of converting received light into light of different colors, the light of which is mixed to form white light. The quantum phosphor layer can realize the color gamut conversion function, and the light emitted by the light source can be converted into light of a plurality of colors after passing through the quantum phosphor layer, and the light of the plurality of colors is mixed to form a white light with a higher color gamut.

In the embodiment shown in FIG. 1, the quantum phosphor layer includes a plurality of transparent regions 121 for transmitting blue light and a plurality of first quantum dot regions 122 and a plurality of at least capable of being excited by blue light to respectively generate red and green light. Two quantum dot regions 123. In this embodiment, the light source may be blue light, and when the blue light illuminates the quantum phosphor layer, the blue light is directly emitted from the transparent region 121, and at the same time, the blue light respectively excites the first quantum dot region 122 and the second quantum dot region 123, and is in the first A quantum dot region 122 and a second quantum dot region 123 respectively emit red light and green light, and the emitted red light and green light are mixed with the blue light emitted from the transparent region 121 to form white light having a higher color gamut.

Preferably, as shown in FIG. 1, the transparent region 121, the first quantum dot region 122, and the second quantum dot region 123 are alternately disposed within the color gamut failure region 12. This arrangement facilitates the placement of the various regions in the gamut failure zone 12 while allowing for a more uniform light output. The transparent region 121, the first quantum dot region 122, and the second quantum dot region 123 are preferably respectively disposed in a strip shape, and the bandwidth thereof can be proportionally set according to actual needs.

It is also preferable that the light-passing areas of the transparent region 121, the first quantum dot region 122, and the second quantum dot region 123 are equal. With this arrangement, the ratio of the light passing through the transparent region 121, the first quantum dot region 122, and the second quantum dot region 123 is made uniform, so that the light is more uniform.

Further, the outer surface of the quantum dot film 10 according to the present invention may further be provided with a protective layer. The protective layer can be used on the one hand to make the surface of the quantum dot film 10 flatter, and on the other hand, it can well protect the quantum dot film 10, and fully guarantee its color gamut conversion function.

A liquid crystal display according to the present invention includes the above quantum dot film. In the liquid crystal display using the above quantum dot film, the liquid crystal display also has a higher color gamut display because the quantum dot film has a higher color gamut conversion function. The quantum dot film 10 of the present invention can be applied to various liquid crystal displays, and can realize a high color gamut design of various liquid crystal displays. The quantum dot diaphragm is preferably disposed in the backlight mode Between the group and the LCD panel.

The quantum dot film of the invention has a complete color gamut conversion function and a simple manufacturing process flow, and thus can be widely applied to various display products.

It should be noted that the foregoing examples are for illustrative purposes only and are not to be considered as limiting. While the invention has been described in terms of the exemplary embodiments the embodiments The invention may be modified within the scope of the invention as set forth in the appended claims. Although the present invention has been described in terms of the specific embodiments, the embodiments and the embodiments of the present invention, the invention is not limited to the details disclosed herein; Structure, method and application.

Claims

A quantum dot film includes a color gamut conversion region and a color gamut failure region located at an outer periphery of the color gamut conversion region, wherein the gamut failure region is provided with a quantum phosphor layer.
The quantum dot film of claim 1, wherein an outer surface of the color gamut conversion region is flush with an outer surface of the color gamut failure region after the quantum phosphor layer is disposed.
The quantum dot film of claim 1, wherein the quantum phosphor layer comprises a plurality of quantum dots capable of converting received light into light of different colors, the different colored lights being mixed to form white light.
The quantum dot film of claim 2, wherein the quantum phosphor layer comprises a plurality of quantum dots capable of converting received light into light of different colors, the different colored lights being mixed to form white light.
The quantum dot film according to claim 1, wherein said quantum phosphor layer comprises a plurality of transparent regions for transmitting blue light and a plurality of first quantum capable of being excited by blue light to respectively generate red light and green light Point region and second quantum dot region.
The quantum dot film according to claim 5, wherein the transparent region, the first quantum dot region, and the second quantum dot region are alternately disposed in the color gamut failure region.
The quantum dot film according to claim 6, wherein the transparent region, the first quantum dot region, and the second quantum dot region are each in a strip shape.
The quantum dot film according to claim 2, wherein said quantum phosphor layer comprises a plurality of transparent regions for transmitting blue light and a plurality of first quantum capable of being excited by blue light to respectively generate red light and green light Point region and second quantum dot region.
The quantum dot film according to claim 8, wherein the transparent region, the first quantum dot region, and the second quantum dot region are alternately disposed in the color gamut failure region.
The quantum dot film according to claim 9, wherein the transparent region, the first quantum dot region, and the second quantum dot region are each in a strip shape.
The quantum dot film according to claim 5, wherein the transparent regions, the first quantum dot regions, and the second quantum dot regions have equal light-passing areas.
The quantum dot film according to claim 8, wherein a light-passing area of the transparent region, the first quantum dot region, and the second quantum dot region is equal.
The quantum dot film according to claim 1, wherein an outer surface of the quantum dot film is provided with a protective layer.
The quantum dot film according to claim 2, wherein the outer surface of the quantum dot film is provided with a protective layer.
A liquid crystal display comprising a quantum dot film, the quantum dot film comprising a color gamut conversion region and a color gamut failure region located at a periphery of the color gamut conversion region, wherein the gamut failure region is provided with quantum fluorescence Powder layer.
The liquid crystal display of claim 15, wherein an outer surface of the color gamut conversion region is flush with an outer surface of the color gamut failure region after the quantum phosphor layer is disposed.
The liquid crystal display according to claim 15, wherein the liquid crystal display further comprises a backlight module and a liquid crystal panel, and the quantum dot film is disposed between the backlight module and the liquid crystal panel.